261406400512230 has 32 divisors (see below), whose sum is σ = 697083734700000. Its totient is φ = 69708373469856.

The previous prime is 261406400512219. The next prime is 261406400512259. The reversal of 261406400512230 is 32215004604162.

261406400512230 is a `hidden beast` number, since 2 + 6 + 1 + 4 + 0 + 6 + 400 + 5 + 12 + 230 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484085926605 + ... + 484085927144.

It is an arithmetic number, because the mean of its divisors is an integer number (21783866709375).

Almost surely, 2^{261406400512230} is an apocalyptic number.

261406400512230 is an abundant number, since it is smaller than the sum of its proper divisors (435677334187770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261406400512230 is a wasteful number, since it uses less digits than its factorization.

261406400512230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968171853765 (or 968171853759 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 261406400512230 in words is "two hundred sixty-one trillion, four hundred six billion, four hundred million, five hundred twelve thousand, two hundred thirty".